Uncertaities due to convection and production of s-nuclei in massive stars

TL;DR

This paper examines how convective overshooting affects s-nuclei production during core helium burning in massive stars with varying initial masses and metallicities, using a diffusive overshooting model.

Contribution

It introduces a detailed analysis of convective overshooting's impact on s-process nucleosynthesis in massive stars across different initial conditions.

Findings

Convective overshooting influences s-nuclei yields.

Metallicity affects s-process efficiency.

Results inform open questions in stellar nucleosynthesis.

Abstract

We have investigated the role of the convective overshooting on the production of s-nuclei during core He-burning phase in stellar models with different initial mass and metallicity ($15 \leq M_{ZAMS}/M_{\odot} \leq 25$; $10^{-4} \leq Z \leq 0.02$), considering a diffusive approach to model the convective overshooting. The results and their possible consequences on some open questions linked to the s-process weak component efficiency are discussed.